All ICD10 Codes

M85.66

Non-Billable
ChapterM00–M99
Ranksubcategory
Official Description

Other cyst of bone, lower leg

Use a more specific code (3 billable)
M85.661Other cyst of bone, right lower legM85.662Other cyst of bone, left lower legM85.669Other cyst of bone, unspecified lower leg
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue (M00-M99).
General instructions are available for the parent sections:
View CH13 NotesView M85 NotesView M85.6 Notes

Clinical Hierarchy

BillableHas subcodes
CH13Diseases of the musculoskeletal system and connective tissue (M00-M99)
M80-M85Disorders of bone density and structure (M80-M85)
M85Other disorders of bone density and structure
M85.6Other cyst of bone
M85.66Other cyst of bone, lower legNot billable
M85.661Other cyst of bone, right lower legBillable
M85.662Other cyst of bone, left lower legBillable
M85.669Other cyst of bone, unspecified lower legBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to M85.66:

subcategoryM85.6
Other cyst of bone
View context instructions
categoryM85
Other disorders of bone density and structure
View context instructions
chapterCH13
Diseases of the musculoskeletal system and connective tissue (M00-M99)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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